Tekken 4 is more of a natural sequel than Tekken Tag Tournament was. It seems more 'solid' and complete, with characters undergoing a visual makeover, New features (the destructable arenas are excellent), new intros and endings, 3 new characters, progressing storylines and new moves (Jin's fighting style and moves are totally different - dunno if its a good or bad thing yet). The 60hz mode is a godsend - you can now play it at the speed it was inteded for, which makes for a much more exciting game. The main problem I have with T4 is the character choices. In Tekken Tag Tournament (TTT), there were LOADS of characters (about 30+), from throughout the series, whereas in T4 you have about 20 characters (including the hidden ones). This alone, seems like a lot, but characters like Jack, Ogre, and Anna are absent. Also, it does'nt take long to unlock all of the secrets, shortening the lifespan. T4 Is great overall, but its best to keep that old copy of Tekken Tag around for the 'megamix' with all the characters from throughout the series. Regardless, for anyone remotely interested in the series, Tekken 4 is a must buy.